move off tarballs back onto upstream distro for cookies at v. 0.2.1 - which is right when the PR which caused us to diverge was merged

package.json

@@ -9,7 +9,7 @@
     "url"  : "https://github.com/benadida/node-client-sessions"
   },
   "dependencies" : {
-    "cookies" : "https://github.com/benadida/cookies/tarball/d2f0f0b3",
+    "cookies" : "0.2.1",
     "node-proxy": "0.6.0"
   },
   "devDependencies": {